Consider these equations: 2S (s) + 3O2 (g)→2SO3 (g) , ΔH = −792 kJ 2S (s) + 2O2 (g)→2SO2 (g) , ΔH = −594 kJ 2SO2 (g) + O2 (g)→2SO3 (g) , ΔH =?
What is the missing ΔH ?
−294 kJ
−198 kJ
+198 kJ
+294 kJ

Compare the equilibrium constants for the systems shown in the table. which favors products the most? which favors products the least? rank these systems in order from most to least in terms of favoring products rather than reactants. d > b > a > c c > a > b > d b > c > d > a a > d > c > b

The scheme below is from a series of reactions that are part of a synthesis of vitamin a. answer the following questions with reference to this scheme. (i) what is "reagent a"? (ii) draw a step-by-step mechanism which explains the formation of compound c from compound b (iii) which reagents would you use to form compound e from compounds c and d (reagents b and c)? for each reagent suggested above in (ii) explain the role of the reagent in the reaction to (iv) form compound e. you may wish to do this by drawing a mechanism. 1. addition of reagent a но reagent a 2. н,о" thо oh нон-с compound a. compound b. compound c .ch-оh 1. reagent b "сно 2. reagent c сh oh compound e. compound d.

650.j is the same amount of energy as? 2720cal1550cal650.cal2.72cal